arch/arm/mach-omap1/include/mach/entry-macro.S

   1 /*
   2  * arch/arm/mach-omap1/include/mach/entry-macro.S
   3  *
   4  * Low-level IRQ helper macros for OMAP-based platforms
   5  *
   6  * Copyright (C) 2009 Texas Instruments
   7  *
   8  * This file is licensed under  the terms of the GNU General Public
   9  * License version 2. This program is licensed "as is" without any
  10  * warranty of any kind, whether express or implied.
  11  */
  12 #include <mach/hardware.h>
  13 #include <mach/io.h>
  14 #include <mach/irqs.h>
  15 #include <asm/hardware/gic.h>
  16
  17 /*
  18  * We use __glue to avoid errors with multiple definitions of
  19  * .globl omap_irq_flags as it's included from entry-armv.S but not
  20  * from entry-common.S.
  21  */
  22 #ifdef __glue
  23                 .pushsection .data
  24                 .globl  omap_irq_flags
  25 omap_irq_flags:
  26                 .word   0
  27                 .popsection
  28 #endif
  29
  30                 .macro  disable_fiq
  31                 .endm
  32
  33                 .macro  get_irqnr_preamble, base, tmp
  34                 .endm
  35
  36                 .macro  arch_ret_to_user, tmp1, tmp2
  37                 .endm
  38
  39                 .macro  get_irqnr_and_base, irqnr, irqstat, base, tmp
  40                 ldr     \base, =OMAP1_IO_ADDRESS(OMAP_IH1_BASE)
  41                 ldr     \irqnr, [\base, #IRQ_ITR_REG_OFFSET]
  42                 ldr     \tmp, [\base, #IRQ_MIR_REG_OFFSET]
  43                 mov     \irqstat, #0xffffffff
  44                 bic     \tmp, \irqstat, \tmp
  45                 tst     \irqnr, \tmp
  46                 beq     1510f
  47
  48                 ldr     \irqnr, [\base, #IRQ_SIR_FIQ_REG_OFFSET]
  49                 ldr     \tmp, =omap_irq_flags   @ irq flags address
  50                 ldr     \tmp, [\tmp, #0]        @ irq flags value
  51                 cmp     \irqnr, #0
  52                 ldreq   \irqnr, [\base, #IRQ_SIR_IRQ_REG_OFFSET]
  53                 cmpeq   \irqnr, \tmp
  54                 ldreq   \base, =OMAP1_IO_ADDRESS(OMAP_IH2_BASE)
  55                 ldreq   \irqnr, [\base, #IRQ_SIR_IRQ_REG_OFFSET]
  56                 addeqs  \irqnr, \irqnr, #32
  57 1510:
  58                 .endm
  59